Forgot to mention,
All tests in a Debian jessie box with with kernel 4.7.8 from Debian jessie backports (source package linux_4.7.8-1~bpo8+1.dsc). Not Ubuntu, but should also be useful for Ubuntu.
Forgot to mention,
All tests in a Debian jessie box with with kernel 4.7.8 from Debian jessie backports (source package linux_4. 7.8-1~bpo8+ 1.dsc). Not Ubuntu, but should also be useful for Ubuntu.